The following Amendment No. 6 to the Atlantic Richfield Special
  Terminiation Allowance Plan contains the current change of control
  provisions applicable to the Company's executive management team,
    including its five most highly compensated executed officers.

                                
                         AMENDMENT NO. 6
                               TO
                       ATLANTIC RICHFIELD
               SPECIAL TERMINATION ALLOWANCE PLAN
                  _____________________________


Pursuant to the power of amendment reserved therein, the Atlantic
Richfield  Special  Termination Allowance Plan  (the  "Plan")  is
hereby amended effective as of July 28, 1997.

1. Section 3, Paragraphs 3.15, 3.19 and 3.20 of the  Plan  are
amended to read as follows:

   "3.15  "Anticipatory Change of Control"  means  (a)
          the  execution  of  an agreement or a written  document
          which,  if the subject thereof were consummated,  would
          result   in   a  Change  of  Control;  (b)   a   public
          announcement  by  any  Person, including  ARCO,  of  an
          intent  to  take  an action(s) which,  if  consummated,
          would  result  in  a  Change of  Control;  or  (c)  the
          delivery of a signed, written statement to the  Trustee
          of  the  Change of Control Trust and ARCO's Independent
          Auditor  by  the Chief Financial Officer  of  ARCO  and
          General Counsel of ARCO that an Anticipatory Change  of
          Control  is  in effect, provided that, with respect  to
          any  of the above three circumstances, the Anticipatory
          Change of Control shall not be effective until approved
          by  either the Board or the Executive Committee of  the
          Board."
     
   "3.19  "Change  of  Control  Trust"  means  the   trust
          established by ARCO to provide for the payment  of  any
          benefits, in whatever form is required, under this Plan
          on and after a Change of Control."
     
   "3.20  "Special  Plan  Administrator" means  the  entity
          designated in the Change of Control Trust, which  shall
          have full administrative powers under this Plan on  and
          after  a  Change of Control, including, but not limited
          to,  all  interpretive and decision powers reserved  to
          the Administrator prior to a Change of Control."

2.  Section  3,  Paragraph  3.21 of the  Plan  is  deleted  and
Paragraph  3.22 is renumbered as Paragraph 3.21.  New  Paragraphs
3.22, 3.23 and 3.24 are added to the Plan to read as follows:


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   "3.22  "Board"  means  the Board of  Directors  of  ARCO
          established by the Articles of Incorporation of ARCO.
     
   3.23   "Executive Committee" means the Executive Committee  of
          the  Board as established by the Board of Directors  of
          ARCO.
     
   3.24   "Severance   Plan"   means  the   Special   Termination
          Allowance  Plan,  Enhanced Retirement  Plan  (i.e.,  an
          improvement   over   the  basic  retirement   allowance
          applicable  for a limited period of time  such  as  the
          "5+5"  Enhanced  Retirement  Plan  benefit  under   the
          Atlantic Richfield Retirement Plan II effective October
          2,  1998)  and/or such other severance  plan  generally
          applicable to Employees involuntarily terminated by the
          Company, as such plan or plans may be in effect on  the
          date immediately preceding a Change of Control."

3.   Section 6 of the Plan is amended to read as follows:

                           "SECTION 6
                                
        ALLOWANCES PAYABLE FOLLOWING A CHANGE OF CONTROL
                                
    6.1   Notwithstanding any other provision of the  Plan,
          if  an Employee is terminated from employment under any
          of  the  circumstances described under  Paragraph  6.2,
          during the Benefit Trigger Window, the Employee will be
          paid  a single cash allowance as described in Paragraph
          6.3, as soon as possible following such termination.

    6.2   Notwithstanding any other provision of this Plan,
          Termination  of  Employment shall mean  termination  of
          employment, other than due to voluntary termination  or
          for  cause, during the Benefit Trigger Window and shall
          include such additional circumstances of termination as
          described in footnote 4 of Paragraph 6.3.

     6.3  Following Termination of Employment of a Participant, as
          described in Paragraph 6.2, a cash payment, as chosen by the
          Participant, shall be made as prescribed under the following
          payment schedule:
     
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                           PARTICIPANT CHOICES:         
                         (1)  Multiple of Covered       
         EMPLOYEE          Compensation (F1); or        CONSTRUCTIVE
           GRADE         (2)  Severance Plan (F2)     TERMINATION (F3)
         --------        ------------------------     ----------------  
          EO & E1        3 x CC or Severance                Yes
            E2           3 x CC or Severance                Yes
            E3           2 x CC or Severance                Yes
            E4           1-1/2 x CC or Severance          Limited
          10 & 9         1 x CC or Severance              Limited
         8 & below       1/2 x CC or Severance            Limited
     

     6.4  Special Tax Allowance

          (a)  A  special  cash allowance shall be paid  to  each
               Employee  in Grades E0, E1, E2 and E3 as  soon  as
               possible following the end of the Benefit  Trigger
               Window in an amount equal to any excise tax  which
               has  been assessed (or, in the sole discretion  of
               the  Special Plan Administrator will be  assessed)
               against   the   Employee   under   4999   ("Golden
               Parachute Payments") of the Internal Revenue  Code
               (the "Code").

         (b)   As to all Employees Grade E4 or below,
               the  Special Plan Administrator shall, in its sole
               discretion, review the value of all benefits  paid
               and which may become payable to a Participant from
               time-to-time and determine whether (i)  the  total
               amount  should  be  frozen  at  the  amount  which
               constitutes    a    "Parachute   Payment"    under
               2806(b)(2)  of the Code, and if so, the allocation
               of  payments  to achieve such result or  (ii)  the
               total amount should be continued to be paid to the
               Participant  pursuant to plan  provisions  without
               regard  to the application of  2806 and   4999  of
               the  Code.   If the amount under Subparagraph  (i)
               exceeds  the  amount paid under Subparagraph  (ii)
               after  assessment  of any applicable  taxes 

- ----------------

(F1)  Covered Compensation ("CC") is the amount equal to the sum of (a)
      annualized Pay and the average of any lump sum merit adjustments
      of Pay for each of the prior 3 years, plus (b) either (i) the
      average of the non-Atlantic Richfield Annual Incentive Plan (AIP)
      bonus for each of the prior 3 years, or (ii) the greater of the
      AIP Award for each of the prior 3 years or the current year Target
      AIP Award (as defined in the AIP).

(F2)  Severance Plan ("Severance") means the Severance Plan as defined
      in Section 3.22 of this Plan.

(F3)  Constructive termination means an Employee's election to terminate
      following management's request to (a) accept a demotion to a lesser
      job, (b) accept a reduction in Pay plus the Target AIP Award (as
      defined in the AIP) by 10% or more, or (c) accept a new principal
      place of work which would qualify for deduction of moving expenses
      under Section 217 of Internal Revenue Code.  For all Employees below
      Grade E3, constructive termination is limited as follows:  Only
      provisions (b) and (c) apply and for Employees Grade 8 or below,
      provision (b) shall apply only to Pay.

                                     - 3 -

               under Section 4999 of the Code, the excess amount
               shall be paid to the Participant as soon as
               possible following such determination by the
               Special Plan Administrator."
         

4.   Section  9, Paragraph 9.3(a) of the Plan is amended  to read as follows:

        "9.3   (a)  During an Anticipatory Change of Control
               the  Plan may not be amended, except to the extent
               required  to comply with legal requirements,  upon
               advice   of  Counsel,  and  in  any  event,   such
               amendment  may be adopted only by the Board.   Any
               such  amendment during a period of an Anticipatory
               Change  of  Control  which  reduces  benefits   or
               otherwise   adversely  affects  the   payment   of
               benefits  to which an Employee would otherwise  be
               eligible   or   would  have  been  eligible   upon
               termination  of employment following a  Change  of
               Control,  as determined in the sole discretion  of
               the  Special  Plan  Administrator,  shall  provide
               substantially  equivalent  value  in   replacement
               thereof to the Participant."

    Executed this 5th day of November, 1998.


ATTEST                             ATLANTIC RICHFIELD COMPANY


     /s/ ARMINEH SIMONIAN                /s/ JOHN H. KELLY
BY: ______________________         BY: ____________________________
                                             JOHN H. KELLY
                                         Senior Vice President
                                             Human Resources


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